I've been using Maveniser to build flex and air sdk archives, but lots of language files seem to be absent.

These are for Adobe supplied content, so the resource bundles are not really necessary, I'd be happy with a workaround to allow me to simply ignore or replace them (eg: I could subsitute nl_NL with en_US without affecting my product... all the nl_NL strings that user would see would come from my own properties files in any case...).